CN204371412U - A kind of tunnel gas exhaust system - Google Patents
A kind of tunnel gas exhaust system Download PDFInfo
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- CN204371412U CN204371412U CN201420792822.3U CN201420792822U CN204371412U CN 204371412 U CN204371412 U CN 204371412U CN 201420792822 U CN201420792822 U CN 201420792822U CN 204371412 U CN204371412 U CN 204371412U
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Abstract
The utility model relates to technical field of tunnel construction, discloses a kind of tunnel gas exhaust system.This tunnel gas exhaust system comprises: high methane tunnel, is arranged at the stack of both sides, high methane tunnel, multiple hoop Permeable blind pipe, longitudinal Permeable blind pipe and gutter; Described hoop Permeable blind pipe is arranged in the preliminary bracing in described high methane tunnel on the surface along the hoop in described high methane tunnel, described longitudinal Permeable blind pipe is communicated with described hoop Permeable blind pipe, described gutter is arranged at the below of described stack, be provided with multiple gas and water separator between described stack and gutter, described gas and water separator is communicated with described longitudinal Permeable blind pipe, stack and gutter respectively.Gas and water separator in the tunnel gas exhaust system that the utility model provides is separated air water, effective gas of discharging in tunnel, solves the problem of tunnel safety construction and railway operation safety; Have that structure is simple, the advantage of good stability, applied widely.
Description
Technical field
The utility model relates to technical field of tunnel construction, particularly relates to a kind of tunnel gas exhaust system, particularly a kind of good stability tunnel gas exhaust system.
Background technology
In railway high methane constructing tunnel, after preliminary bracing completes, generally the surface of supporting in the early stage loopful lays obturator-type foamed plastics bed course, and then loopful lays gas division board, finally builds airtightness concrete secondary lining, is isolated by methane gas.Adopt back sticking type rubber fastening band, hoop rubber fastening band, longitudinal steel limit waterstop and two component polysulfide sealing compound to process to constuction joint simultaneously, spill in tunnel to prevent methane gas.
But drain hole must be reserved in Tunnel Second Lining surface, object is discharged in the lateral sulcus in tunnel by the water of seepage flow in secondary lining behind rock mass, this just causes methane gas and enters in tunnel from drain hole, has had influence on the construction in tunnel and the safety of railway operation.In addition, when the concrete tightness of secondary lining is not up to standard or the ring of secondary lining, longitudinal treatment of construction joints not at that time, when methane gas between preliminary bracing and secondary lining reaches certain pressure gauge, also have gas and overflow in tunnel from secondary lining surface or constuction joint.Have impact on tunnel safety construction and railway operation safety, poor stability.
In view of the defect of above-mentioned prior art, need to provide a kind of good stability tunnel gas exhaust system.
Utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model is that drain hole must be reserved in existing Tunnel Second Lining surface, object is discharged in the lateral sulcus in tunnel by the water of seepage flow in secondary lining behind rock mass, this just causes methane gas and enters in tunnel from drain hole, has had influence on the construction in tunnel and the safety of railway operation.In addition, when the concrete tightness of secondary lining is not up to standard or the ring of secondary lining, longitudinal treatment of construction joints not at that time, when methane gas between preliminary bracing and secondary lining reaches certain pressure gauge, also have gas and overflow in tunnel from secondary lining surface or constuction joint.Have impact on tunnel safety construction and railway operation safety, the problem of poor stability.
(2) technical scheme
In order to solve the problems of the technologies described above, a kind of tunnel gas exhaust system that the utility model provides, it comprises: high methane tunnel, is arranged at the stack of both sides, high methane tunnel, multiple hoop Permeable blind pipe, longitudinal Permeable blind pipe and gutter; Described hoop Permeable blind pipe is arranged in the preliminary bracing in described high methane tunnel on the surface along the hoop in described high methane tunnel, described longitudinal Permeable blind pipe is communicated with described hoop Permeable blind pipe, described gutter is arranged at the below of described stack, be provided with multiple gas and water separator between described stack and gutter, described gas and water separator is communicated with described longitudinal Permeable blind pipe, stack and gutter respectively.
Wherein, described gas and water separator is the back-shaped pipe of gas-water separation of square shape; The top of the back-shaped pipe of described gas-water separation is provided with the gas outlet be communicated with described stack, is provided with the delivery port be communicated with described gutter bottom it.
Wherein, the junction between described gas outlet and described stack is provided with fluid sealant.
Wherein, the adjacent back-shaped pipe of described gas-water separation is communicated with by described longitudinal Permeable blind pipe.
Wherein, the junction between described longitudinal Permeable blind pipe and the back-shaped pipe of described gas-water separation is provided with water seal.
Wherein, described stack comprises downtake pipe and second exhaust pipe, and described downtake pipe is communicated with by communicating pipe with described second exhaust pipe.
Wherein, also comprise and flat lead tunnel and transverse passage-way, described high methane tunnel with described by described transverse passage-way flatly led tunnel and is connected, and described stack leads tunnel and ft connection by described transverse passage-way and described putting down successively.
(3) beneficial effect
Technique scheme tool of the present utility model has the following advantages: in the tunnel gas exhaust system that the utility model provides, hoop Permeable blind pipe is arranged in the preliminary bracing in high methane tunnel on the surface along the hoop in high methane tunnel, longitudinal Permeable blind pipe is communicated with hoop Permeable blind pipe, gutter is arranged at the below of stack, be provided with multiple gas and water separator between stack and gutter, gas and water separator is communicated with longitudinal Permeable blind pipe, stack and gutter respectively.Gas and water separator in the tunnel gas exhaust system that the utility model provides is separated air water, effective gas of discharging in tunnel, solves the problem of tunnel safety construction and railway operation safety; Have that structure is simple, the advantage of good stability, applied widely.
Accompanying drawing explanation
Fig. 1 is the top view of the tunnel gas exhaust system of the utility model embodiment;
Fig. 2 is the front schematic view of the syndeton of the back-shaped pipe of gas-water separation 8 and the first delivery pipe, longitudinal Permeable blind pipe and hoop Permeable blind pipe in the tunnel gas exhaust system of the utility model embodiment.
In figure: 1: high methane tunnel; 2: put down and lead tunnel; 3: transverse passage-way; 4: downtake pipe; 5: second exhaust pipe; 6: communicating pipe; 7: gutter; 8: the back-shaped pipe of gas-water separation; 9: hoop Permeable blind pipe; 10, longitudinal Permeable blind pipe; 11: gas outlet; 12: delivery port; 13: the first water inlets; 14: the second water inlets.
Detailed description of the invention
In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more; Term " on ", D score, "left", "right", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, the tunnel gas exhaust system of the utility model embodiment, it comprises: high methane tunnel 1, is arranged at the stack of both sides, high methane tunnel 1, multiple hoop Permeable blind pipe 9, longitudinal Permeable blind pipe 10 and gutter 7; The stack of both sides is arranged at the preliminary bracing of both sides, high methane tunnel 1 on the surface along the longitudinal direction in high methane tunnel 1 respectively.Specify in the present embodiment that in Fig. 1, left and right directions is for longitudinal, above-below direction is hoop.Hoop Permeable blind pipe 9 is arranged in the preliminary bracing in high methane tunnel 1 on the surface along the hoop in high methane tunnel 1, is namely arranged at the arch wall position on top, high methane tunnel 1.Longitudinal Permeable blind pipe 10 is arranged at the preliminary bracing of both sides, high methane tunnel 1 on the surface along the longitudinal direction in high methane tunnel 1, and longitudinal Permeable blind pipe 10 is communicated with hoop Permeable blind pipe 9.Gutter 7 is arranged at the below of stack, is provided with multiple gas and water separator between stack and gutter 7, and gas and water separator is communicated with longitudinal Permeable blind pipe 10, stack and gutter 7 respectively.Stack is communicated with the outside atmosphere in high methane tunnel 1.
After setting up gas and water separator and drainage system in the present embodiment, re-lay obturator-type foamed plastics bed course and gas division board, gutter 7 is drawn and makes it to form drain hole on secondary lining surface, secondary liner structure reinforcing bar after processing constuction joint is installed, build tightness secondary lining concrete, complete a plate secondary lining operation.Owing to being provided with gas and water separator and stack in the drainage system between high methane tunnel 1 preliminary bracing and secondary lining, when entering into the back-shaped pipe 8 of square shape gas-water separation by Permeable blind pipe after gas accumulation to certain pressure, methane gas enters into stack, is discharged into outside hole.Gas and water separator is separated air water, effective gas of discharging in tunnel, solves the problem of tunnel safety construction and railway operation safety; Have that structure is simple, the advantage of good stability, applied widely.
As shown in Figure 2, in this enforcement, gas and water separator is the back-shaped pipe 8 of gas-water separation of square shape, and the top of the back-shaped pipe 8 of gas-water separation is provided with the gas outlet 11 be communicated with stack, and the bottom of the back-shaped pipe 8 of gas-water separation is provided with the delivery port 12 be communicated with gutter 7.In order to better tightness, the gas outlet 11 in this enforcement and the junction between stack are provided with fluid sealant, i.e. mounting pipe joint again after the gluing of union position.
Be communicated with by longitudinal Permeable blind pipe 10 between the back-shaped pipe of gas-water separation adjacent in the present embodiment 8, water converges in the back-shaped pipe 8 of gas-water separation by longitudinal Permeable blind pipe 10.Gas enters into the back-shaped pipe 8 of gas-water separation by hoop Permeable blind pipe 9 and longitudinal Permeable blind pipe 10.The rear side standpipe of the back-shaped pipe 8 of gas-water separation is provided with rear side the first water inlet 13, the front side standpipe of the back-shaped pipe 8 of gas-water separation is provided with the second water inlet 14.Rear side first water inlet 13 on the back-shaped pipe of gas-water separation 8 that entrance, high methane tunnel 1 is arranged is closed, and the second water inlet 14 on the back-shaped pipe of gas-water separation 8 that the exit in high methane tunnel 1 is arranged is closed.
In order to prevent gas from gutter is discharged, the junction between longitudinal Permeable blind pipe 10 and the back-shaped pipe 8 of gas-water separation is provided with water seal.The i.e. delivery port 12 of the bottom of the back-shaped pipe 8 of gas-water separation and the first water inlet 13 of front side, and be formed with water seal between the second water inlet 14 of rear side, make methane gas easily to exhaust pipe flow, be not easy to discharge in gutter 7, thus avoid methane gas and discharge in high methane tunnel 1.This exhaust system is discharged into outside tunnel, greatly reduces the probability entered by secondary lining in high methane tunnel 1.
In this enforcement, stack comprises downtake pipe 4 and second exhaust pipe 5, and namely the preliminary bracing surface, side in high methane tunnel 1 is provided with downtake pipe 4, and the opposite side preliminary bracing surface in high methane tunnel 1 is provided with second exhaust pipe 5.Downtake pipe 4 was communicated with second exhaust pipe 5 by communicating pipe 6.Also comprise in this enforcement and flat lead tunnel 2 and transverse passage-way 3, high methane tunnel 1 is led tunnel 2 by transverse passage-way 3 be connected with flat, stack successively by transverse passage-way 3 with equal the outside atmosphere leading tunnel 2 and be communicated with.
When the tunnel gas exhaust system that the utility model provides is installed, first check that preliminary bracing surface is with or without uneven and sharp object, after qualified, supporting in the early stage circumferentially can lay hoop Permeable blind pipe 9, longitudinal Permeable blind pipe 10, the back-shaped pipe 8 of gas-water separation, downtake pipe 4 and second exhaust pipe 5 on the surface.Notice that the quantity of gutter 7 is consistent with gas-water separation back-shaped pipe 8, each union place wants tight simultaneously, the particularly back-shaped pipe 8 of gas-water separation, downtake pipe 4 and second exhaust pipe 5, assembling with when being connected after the gluing of union position mounting pipe joint again.Complete above-mentioned operation and after seal pass the test is carried out to the back-shaped pipe 8 of gas-water separation, downtake pipe 4 and second exhaust pipe 5, obturator-type foamed plastics bed course and gas division board can be laid, gutter 7 is drawn and makes it to form drain hole on secondary lining surface, secondary liner structure reinforcing bar after processing constuction joint is installed, build tightness secondary lining concrete, complete a plate secondary lining operation.When entering into the back-shaped pipe 8 of gas-water separation by hoop Permeable blind pipe 9 and longitudinal Permeable blind pipe 10 after gas accumulation to certain pressure, device in Gas cognition enters into downtake pipe 4 by the gas outlet 11 on top, be discharged into outside hole, water after being separated with gas can enter into the lateral sulcus in tunnel by the gutter 7 that the delivery port 12 of bottom connects, because gas outlet 11 is communicated with air outside hole, and delivery port 12 and the first water inlet 13, water seal is formed between second water inlet 14, methane gas is easily flowed to downtake pipe 4, be not easy to discharge in gutter 7, thus avoid methane gas and discharge in tunnel.
In sum, the utility model has the following advantages: in the tunnel gas exhaust system that the utility model provides, hoop Permeable blind pipe is arranged in the preliminary bracing in high methane tunnel on the surface along the hoop in high methane tunnel, longitudinal Permeable blind pipe is communicated with hoop Permeable blind pipe, gutter is arranged at the below of stack, be provided with multiple gas and water separator between stack and gutter, gas and water separator is communicated with longitudinal Permeable blind pipe, stack and gutter respectively.Gas and water separator in the tunnel gas exhaust system that the utility model provides is separated air water, effective gas of discharging in tunnel, solves the problem of tunnel safety construction and railway operation safety; Have that structure is simple, the advantage of good stability, applied widely.
Further, in order to prevent gas from discharging from gutter, the junction between longitudinal Permeable blind pipe and the back-shaped pipe of gas-water separation is provided with water seal.
Above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (7)
1. a tunnel gas exhaust system, it is characterized in that, comprise: high methane tunnel (1), be arranged at the stack of high methane tunnel (1) both sides, multiple hoop Permeable blind pipe (9), longitudinal Permeable blind pipe (10) and gutter (7); Described hoop Permeable blind pipe (9) is arranged in the preliminary bracing of described high methane tunnel (1) on the surface along the hoop of described high methane tunnel (1), described longitudinal Permeable blind pipe (10) is communicated with described hoop Permeable blind pipe (9), described gutter (7) is arranged at the below of described stack, be provided with multiple gas and water separator between described stack and gutter (7), described gas and water separator is communicated with described longitudinal Permeable blind pipe (10), stack and gutter (7) respectively.
2. tunnel gas exhaust system as claimed in claim 1, is characterized in that: described gas and water separator is the back-shaped pipe of gas-water separation (8) of square shape; The top of the back-shaped pipe of described gas-water separation (8) is provided with the gas outlet (11) be communicated with described stack, is provided with the delivery port (12) be communicated with described gutter (7) bottom it.
3. tunnel gas exhaust system as claimed in claim 2, is characterized in that: the junction between described gas outlet (11) and described stack is provided with fluid sealant.
4. tunnel gas exhaust system as claimed in claim 2, is characterized in that: the adjacent back-shaped pipe of described gas-water separation (8) is communicated with by described longitudinal Permeable blind pipe (10).
5. tunnel gas exhaust system as claimed in claim 4, is characterized in that: the junction between described longitudinal Permeable blind pipe (10) and the back-shaped pipe of described gas-water separation (8) is provided with water seal.
6. tunnel gas exhaust system as claimed in claim 1, it is characterized in that: described stack comprises downtake pipe (4) and second exhaust pipe (5), and described downtake pipe (4) is communicated with by communicating pipe (6) with described second exhaust pipe (5).
7. tunnel gas exhaust system as claimed in claim 1, it is characterized in that: also comprise putting down and lead tunnel (2) and transverse passage-way (3), described high methane tunnel (1) with described by described transverse passage-way (3) flat led tunnel (2) and is connected, and described stack leads tunnel (2) and ft connection by described transverse passage-way (3) and described putting down successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420792822.3U CN204371412U (en) | 2014-12-12 | 2014-12-12 | A kind of tunnel gas exhaust system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420792822.3U CN204371412U (en) | 2014-12-12 | 2014-12-12 | A kind of tunnel gas exhaust system |
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| CN204371412U true CN204371412U (en) | 2015-06-03 |
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| CN201420792822.3U Active CN204371412U (en) | 2014-12-12 | 2014-12-12 | A kind of tunnel gas exhaust system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533510A (en) * | 2014-12-12 | 2015-04-22 | 中铁十九局集团有限公司 | Tunnel gas discharging system |
| CN109707437A (en) * | 2019-02-27 | 2019-05-03 | 中煤科工集团重庆研究院有限公司 | A kind of tunneled central ditch gas prevention gathers processing unit and its processing method |
| CN109869189A (en) * | 2019-03-22 | 2019-06-11 | 云南建投基础工程有限责任公司 | A kind of tunnel pernicious gas and underground moisture are from exhaust system device |
-
2014
- 2014-12-12 CN CN201420792822.3U patent/CN204371412U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533510A (en) * | 2014-12-12 | 2015-04-22 | 中铁十九局集团有限公司 | Tunnel gas discharging system |
| CN109707437A (en) * | 2019-02-27 | 2019-05-03 | 中煤科工集团重庆研究院有限公司 | A kind of tunneled central ditch gas prevention gathers processing unit and its processing method |
| CN109707437B (en) * | 2019-02-27 | 2021-06-15 | 中煤科工集团重庆研究院有限公司 | Tunnel central ditch gas accumulation prevention processing device and processing method thereof |
| CN109869189A (en) * | 2019-03-22 | 2019-06-11 | 云南建投基础工程有限责任公司 | A kind of tunnel pernicious gas and underground moisture are from exhaust system device |
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